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United States Patent | 5,680,137 |
Ando ,   et al. | October 21, 1997 |
A radar system allows switched use of an FM-CW radar mode and a phase difference radar mode, the FM-CW radar mode being designed for use in sensing a target at a medium and long distance away and the phase difference radar mode being designed for use in sensing a target at a short distance away, whereby a target at an extremely short to long distance away can be sensed with high accuracy.
Inventors: | Ando; Hiroyuki (Wako, JP); Kato; Shigeki (Wako, JP) |
Assignee: | Honda Giken Kogyo Kabushiki Kaisha (Tokyo, JP) |
Appl. No.: | 573941 |
Filed: | December 18, 1995 |
Dec 19, 1994[JP] | 6-315263 |
Current U.S. Class: | 342/127 |
Intern'l Class: | G01S 013/34 |
Field of Search: | 342/118,127,128,131,132,134 |
5087918 | Feb., 1992 | May et al. | 342/70. |
Foreign Patent Documents | |||
57-166573(A) | Apr., 1981 | JP. | |
57-142575(A) | Sep., 1982 | JP. | |
3-103789(A) | Apr., 1991 | JP. | |
6-249944(A) | Sep., 1994 | JP. |